Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese PatentApplications Ser. No. 201710996598.8 and Ser. No. 201710975184.7 filedon Oct. 19, 2017, the entire content of which is incorporated herein byreference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or

Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as theprogress of the semiconductor manufacturing technology makes the pixelsize of the photosensitive devices shrink, coupled with the currentdevelopment trend of electronic products being that their functionsshould be better and their shape should be thin and small, miniaturecamera lens with good imaging quality therefor has become a mainstreamin the market. In order to obtain better imaging quality, the lens thatis traditionally equipped in mobile phone cameras adopts a three-pieceor four-piece lens structure. And, with the development of technologyand the increase of the diverse demands of users, and under thiscircumstances that the pixel area of photosensitive devices is shrinkingsteadily and the requirement of the system for the imaging quality isimproving constantly, the five-piece, six-piece and seven-piece lensstructure gradually appear in lens design. There is an urgent need forultra-thin wide-angle camera lenses which have good opticalcharacteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface Si.The first lens L1 is made of plastic material, the second lens L2 ismade of plastic material, the third lens L3 is made of plastic material,the fourth lens L4 is made of plastic material, the fifth lens L5 ismade of plastic material, the sixth lens L6 is made of glass material,the seventh lens L7 is made of glass material.

Here, the focal length of the whole camera optical lens is defined as f,the focal length of the first lens L1 is defined as f1, the focal lengthof the third lens L3 is defined as f3, the focal length of the fourthlens L4 is defined as f4, the refractive power of the sixth lens L6 isdefined as n6, the refractive power of the seventh lens L7 is defined asn7, the curvature radius of the object side surface of the seventh lensL7 is defined as R13, the curvature radius of the image side surface ofthe seventh lens L7 is defined as R14. The camera optical lens 10satisfies the following condition:

1.51

f1/f

2.5,1.7

n6

2.2,−2

f3/f4

2;

3

(R13+R14)/(R13−R14)

10;

1.7

n7

2.2.

Condition 1.51

f1/f

2.5 fixes the positive refractive power of the first lens L1. If thelower limit of the set value is exceeded, although it benefits theultra-thin development of lenses, but the positive refractive power ofthe first lens L1 will be too strong, problem like aberration isdifficult to be corrected, and it is also unfavorable for wide-angledevelopment of lens. On the contrary, if the higher limit of the setvalue is exceeded, the positive refractive power of the first lens L1becomes too weak, it is then difficult to develop ultra-thin lenses.Preferably, the following condition shall be met, 1.514

f1/f

2.01.

Condition 1.7

n6

2.2 fixes the refractive power of the sixth lens L6, refractive powerwithin this range benefits the ultra-thin development of lenses, and italso benefits the correction of aberration. Preferably, the followingcondition shall be met, 1.72

n6

2.02.

Condition −2

f3/f4

2 fixes the ratio between the focal length f3 of the third lens L3 andthe focal length f4 of the fourth lens L4, a ratio within this range caneffectively reduce the sensitivity of lens group used in camera andfurther enhance the imaging quality. Preferably, the following conditionshall be met, −1.34

f3/f4

0.702.

Condition 3

(R13+R14)/(R13−R14)

10 fixes the shape of the seventh lens L7, when the value is beyond thisrange, with the development into the direction of ultra-thin andwide-angle lenses, problem like aberration of the off-axis picture angleis difficult to be corrected. Preferably, the following condition shallbe met, 3.03

(R13+R14)/(R13−R14)

6.53.

Condition 1.7

n7

2.2 fixes the refractive power of the seventh lens L7, a refractivepower within this range benefits the development of ultra-thin lenses,and it also benefits the correction of aberration. Preferably, thefollowing condition shall be met, 1.72

n7

1.97.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens meet the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens isf, the focal length of the first lens L1 is f1, the curvature radius ofthe object side surface of the first lens L1 is R1, the curvature radiusof the image side surface of the first lens L1 is R2 and the thicknesson-axis of the first lens L1 is d1, they meet the following condition:−4.18

(R1+R2)/(R1−R2)

−1.25, this condition reasonably controls the shape of the first lens,then the first lens can effectively correct the spherical aberration ofthe system; if the condition 0.16

d1

0.53 is satisfied is beneficial for the realization of ultra-thin lens.Preferably, the following condition shall be met, −2.61

(R1+R2)/(R1−R2)

−1.56; 0.26

d1

0.42.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the second lens L2 is f2, the curvature radiusof the object side surface of the second lens L2 is R3, the curvatureradius of image side surface of the second lens L2 is R4 and thethickness on-axis of the second lens L2 is d3, they meet the followingcondition: when the condition −12.70

f2/f

−2.57 is met, the negative refractive power of the second lens L2 iscontrolled within reasonable scope, the spherical aberration caused bythe first lens L1 which has positive refractive power and the fieldcurvature of the system then can be reasonably and effectively balanced;the condition 3.84

(R3+R4)/(R3−R4)

15.06 fixes the shape of the second lens L2, when value is beyond thisrange, with the development into the direction of ultra-thin andwide-angle lenses, problem like on-axis chromatic aberration isdifficult to be corrected; if the condition 0.12

d3

0.39 is met, it is beneficial for the realization of ultra-thin lenses.Preferably, the following conditions shall be met, −7.94

f2/f

−3.21; 6.14

(R3+R4)/(R3−R4)

12.05; 0.19

d3

0.31.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the third lens L3 is f3, the curvature radiusof the object side surface of the third lens L3 is R5, the curvatureradius of the image side surface of the third lens L3 is R6 and thethickness on-axis of the third lens L3 is d5, they meet the condition:0.36

f3/f

1.45, by meeting this condition, it is helpful for the system to obtaingood ability in balancing the field curvature, so that the image qualitycan be effectively improved; by meeting the condition 0.11(R5+R6)/(R5−R6)

0.50 the shape of the third lens L3 can be effectively controlled, it isbeneficial for the shaping of the third lens L3 and bad shaping andstress generation due to extra large curvature of surface of the thirdlens L3 can be avoided; when the condition 0.30

d5

0.99 is met, it is beneficial for the realization of ultra-thin lenses.Preferably, the following conditions shall be met, 0.57

f3/f

1.16; 0.17

(R5+R6)/(R5−R6)

0.40; 0.48

d5

0.79.

In this embodiment, the object side surface of the fourth lens L4 is aconcave surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the fourth lens L4 is f4, the curvature radiusof the object side surface of the fourth lens L4 is R7, the curvatureradius of the image side surface of the fourth lens L4 is R8 and thethickness on-axis of the fourth lens L4 is d7, they meet the condition:−2.69

f4/f

−0.80, the appropriate distribution of refractive power makes itpossible that the system has better imaging quality and lowersensitivity; the condition −0.90

(R7+R8)/(R7−R8)

−0.23 fixes the shape of the fourth lens L4, when beyond this range,with the development into the direction of ultra-thin and wide-anglelens, the problem like chromatic aberration is difficult to becorrected; when the condition 0.12

d7

0.35 is met, it is beneficial for realization of ultra-thin lenses.Preferably, the following conditions shall be met, −1.68

f4/f

−1.00; −0.56

(R7+R8)/(R7−R8)

−0.28; 0.18

d7

0.28.

In this embodiment, the object side surface of the fifth lens L5 is aconcave surface relative to the proximal axis, the focal length of thewhole camera optical lens 10 is f, the focal length of the fifth lens L5is f5, the curvature radius of the object side surface of the fifth lensL5 is R9, the curvature radius of the image side surface of the fifthlens L5 is R10 and the thickness on-axis of the fifth lens L5 is d9,they meet the condition: −3.57

f5/f

80.19, the limitation on the fifth lens L5 can effectively make thelight angle of the camera lens flat and the tolerance sensitivityreduces; the condition −5413.63

(R9+R10)/(R9−R10)

−0.52 fixes the shape of the fifth lens L5, when beyond this range, withthe development into the direction of ultra-thin and wide-angle lens,the problem like off-axis chromatic aberration is difficult to becorrected; when the condition 0.20

d9

0.62 is met, it is beneficial for the realization of ultra-thin lens.Preferably, the following conditions shall be met, −2.23

f5/f

64.15; −3383.52

(R9+R10)/(R9−R10)

−0.65; 0.32

d9

0.50.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has positiverefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the sixth lens L6 is f6, the curvature radiusof the object side surface of the sixth lens L6 is R11, the curvatureradius of the image side surface of the sixth lens L6 is R12 and thethickness on-axis of the sixth lens L6 is d11, they meet the condition:0.53

f6/f

2.64, the appropriate distribution of refractive power makes it possiblethat the system has better imaging quality and lower sensitivity; thecondition −9.71

(R11+R12)/(R11−R12)

−1.08 fixes the shape of the sixth lens L6, when beyond this range, withthe development into the direction of ultra-thin and wide-angle lenses,the problem like off-axis chromatic aberration is difficult to becorrected; when the condition 0.16

d11

0.51, is met, it is beneficial for the realization of ultra-thin lens.Preferably, the following conditions shall be met, 0.85

f6/f

2.11; −6.07 (R11+R12)/(R11−R12)

−1.35; 0.26

d11

0.41.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power; the focal length of the whole camera optical lens 10is f, the focal length of the seventh lens L7 is f7 and the thicknesson-axis of the seventh lens L7 is d13, they meet the conditions −1.89

f7/f

−0.63, appropriate distribution of refractive power makes it possiblethat the system has better imaging quality and lower sensitivity; whenthe condition 0.13

d13

0.38 is met, it is beneficial for the realization of ultra-thin lens.Preferably, the following conditions shall be met, −1.18

f7/f

−0.78; 0.20

d13

0.30.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 4.83 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 4.61.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 1.86. A large aperture has better imagingperformance.

Preferably, the aperture F number of the camera optical lens 10 is lessthan or equal to 1.82.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceto the image side surface of the first lens L1).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be met, the descriptionbelow can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd νd S1 ∞ d0 = −0.290 R1 2.121 d1 = 0.351 nd1 1.5440 ν156.10 R2 7.010 d2 = 0.030 R3 2.073 d3 = 0.258 nd2 1.5440 ν2 56.10 R41.698 d4 = 0.163 R5 5.505 d5 = 0.658 nd3 1.5440 ν3 56.10 R6 −2.740 d6 =0.031 R7 −4.684 d7 = 0.230 nd4 1.6400 ν4 22.40 R8 9.516 d8 = 0.446 R9−4.359 d9 = 0.398 nd5 1.6400 ν5 22.40 R10 −4.362 d10 = 0.123 R11 1.809d11 = 0.320 nd6 1.7330 ν6 48.90 R12 2.747 d12 = 0.582 R13 2.181261 d13 =0.250 nd7 1.7330 ν7 48.90 R14 1.104072 d14 = 0.175 R15 ∞ d15 = 0.210 ndg1.5160 νg 64.16 R16 ∞ d16 = 0.375

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lens

L6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −1.4359E−01 2.8394E−02 −6.3360E−02 1.9520E−01 −2.8720E−01 2.6631E−01−1.0510E−01 6.7220E−03 R2 3.3348E+01 −6.8733E−02 1.1807E−01 3.9546E−01−1.3554E+00 1.9127E+00 −1.2267E+00 2.8261E−01 R3 −1.3926E+00 −2.1396E−011.9465E−01 4.1366E−01 −1.5299E+00 2.0917E+00 −1.3062E+00 2.8147E−01 R4−1.3245E+00 −1.8408E−01 4.5672E−02 −1.4406E−01 5.1444E−01 −1.1183E+001.2099E+00 −4.5721E−01 R5 7.4402E+00 −4.0567E−02 8.4811E−03 −4.1424E−011.0632E+00 −1.6965E+00 1.5207E+00 −5.1204E−01 R6 −3.3676E+01 −5.0410E−017.9680E−01 −1.0057E+00 7.3731E−01 −2.0999E−01 −6.3942E−02 4.3368E−02 R7−8.2582E+01 −5.4759E−01 7.4122E−01 −7.3389E−01 5.3665E−01 −2.4067E−014.3804E−02 8.3175E−03 R8 5.9075E+01 −1.6291E−01 1.4883E−01 −8.9517E−023.0975E−02 −5.8577E−04 −3.1618E−03 7.3074E−04 R9 1.2896E+01 4.8289E−021.0318E−01 −4.1456E−01 6.0492E−01 −5.1810E−01 2.4091E−01 −4.6901E−02 R104.4834E+00 −1.8428E−01 3.4455E−01 −4.7596E−01 3.9897E−01 −2.1132E−016.2367E−02 −7.4880E−03 R11 −2.1424E+00 −7.8746E−02 3.9998E−02−1.1179E−01 8.7039E−02 −3.5947E−02 7.4080E−03 −5.3705E−04 R12−2.2182E+00 1.1872E−01 −2.2002E−01 1.3346E−01 −4.8749E−02 1.1031E−02−1.4203E−03 7.9463E−05 R13 4.2189E+00 −2.6508E−01 1.0834E−01 −2.6602E−027.1938E−03 −1.8446E−03 2.6415E−04 −1.4549E−05 R14 −9.1396E+00−1.6583E−01 7.8474E−02 −3.1146E−02 7.8798E−03 −1.1119E−03 7.7275E−05−2.0528E−06

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image Height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion Inflexion Inflexion Inflexion Inflexion point pointpoint point point number position 1 position 2 position 3 position 4 R10 R2 0 0 R3 1 0.895 R4 3 0.535 0.835 1.015 R5 3 0.475 0.855 1.045 R6 11.075 R7 1 0.925 R8 2 0.265 0.865 R9 0 R10 0 R11 1 0.645 R12 1 0.755 R134 0.275 1.455 1.875 1.975 R14 1 0.425

TABLE 4 Arrest Arrest point number Arrest point position 1 pointposition 2 R1 0 R2 0 R3 0 R4 0 R5 2 0.725 0.925 R6 0 R7 0 R8 2 0.4951.055 R9 0 R10 0 R11 1 1.025 R12 1 1.235 R13 1 0.525 R14 1 0.935

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 470 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 9 shows the various values of the examples 1, 2 and the valuescorresponding with the parameters which are already specified in theconditions.

As shown in Table 9, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.978 mm, the full vision field image height is 2.9335 mm, thevision field angle in the diagonal direction is 77.49°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd νd S1 ∞ d0 = −0.290 R1 2.026 d1 = 0.330 nd1 1.5440 ν156.10 R2 5.739 d2 = 0.046 R3 1.864 d3 = 0.235 nd2 1.5440 ν2 56.10 R41.434 d4 = 0.228 R5 3.530 d5 = 0.602 nd3 1.5440 ν3 56.10 R6 −2.272 d6 =0.030 R7 −3.979 d7 = 0.230 nd4 1.6400 ν4 22.40 R8 10.514 d8 = 0.642 R9−4.838 d9 = 0.413 nd5 1.6400 ν5 22.40 R10 39.160 d10 = 0.015 R11 2.586d11 = 0.343 nd6 1.8470 ν6 23.80 R12 10.922 d12 = 0.487 R13 2.23159 d13 =0.253 nd7 1.7330 ν7 48.90 R14 1.12957 d14 = 0.498 R15 ∞ d15 = 0.210 ndg1.5160 νg 64.16 R16 ∞ d16 = 0.039

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −2.7080E−01 2.4443E−02 −7.3517E−02 3.1437E−01 −5.7770E−01 6.0834E−01−3.2223E−01 6.2664E−02 R2 2.2820E+01 −9.7593E−02 5.1826E−01 −8.3925E−017.5451E−01 −2.0092E−01 −1.2684E−01 5.7328E−02 R3 −1.1343E+00 −2.7002E−017.1700E−01 −1.0346E+00 6.9640E−01 1.2362E−01 −4.6063E−01 1.6649E−01 R4−1.1624E+00 −2.1289E−01 2.1083E−01 2.6227E−02 −7.8475E−01 1.4549E+00−1.1439E+00 3.2105E−01 R5 2.1134E+00 −4.3774E−02 −1.0475E−02 5.6742E−03−6.1436E−02 4.6359E−02 8.2918E−02 −6.7076E−02 R6 −4.6817E+01 −4.2670E−018.6099E−01 −1.7789E+00 2.7926E+00 −2.8720E+00 1.7006E+00 −4.2857E−01 R7−9.0000E+01 −2.1489E−01 −1.4808E−02 4.2172E−01 −7.4706E−01 7.4163E−01−4.2810E−01 1.0859E−01 R8 8.9975E+01 −4.2320E−02 −8.7136E−02 2.0491E−01−2.0629E−01 1.0593E−01 −2.6657E−02 2.6368E−03 R9 1.3547E+01 4.0869E−021.4798E−01 −5.5498E−01 7.7155E−01 −5.9814E−01 2.4420E−01 −4.2494E−02 R10−4.1141E+01 −1.1717E−01 1.3854E−01 −3.0610E−01 3.0312E−01 −1.6472E−014.5785E−02 −4.9771E−03 R11 −1.2154E+00 3.1804E−03 −1.3214E−01 9.3439E−02−7.4697E−02 4.3011E−02 −1.4900E−02 2.1849E−03 R12 2.4289E+01 1.3922E−01−2.3229E−01 1.4416E−01 −5.9229E−02 1.5443E−02 −2.3565E−03 1.5698E−04 R133.6755E+00 −3.0728E−01 2.2734E−02 3.5890E−02 −2.9531E−03 −3.8672E−031.0063E−03 −7.2417E−05 R14 −6.4918E+00 −2.3401E−01 1.1646E−01−4.4614E−02 1.1623E−02 −1.7592E−03 1.3350E−04 −3.9057E−06

Tables 7 and 8 show the inflexion point and arrest point design data ofeach lens of the camera optical lens 20 in embodiment 2 of the presentinvention.

TABLE 7 Inflexion point Inflexion point Inflexion point Inflexion pointnumber position 1 position 2 position 3 R1 0 R2 0 R3 1 0.855 R4 1 0.755R5 1 1.025 R6 2 0.955 1.005 R7 0 R8 2 0.415 0.825 R9 0 R10 1 0.145 R11 10.625 R12 1 0.675 R13 3 0.275 1.335 1.645 R14 1 0.415

TABLE 8 Arrest point number Arrest point position 1 R1 0 R2 0 R3 0 R4 11.005 R5 0 R6 0 R7 0 R8 0 R9 0 R10 1 0.245 R11 1 0.965 R12 1 0.975 R13 10.495 R14 1 0.865

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 470 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 9, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 2.031 mm, the full vision field image height is 2.9335 mm, thevision field angle in the diagonal direction is 76.00°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 9 Embodiment 1 Embodiment 2 f 3.570 3.664 f1 5.435 5.562 f2−22.662 −14.126 f3 3.450 2.629 f4 −4.800 −4.413 f5 190.840 −6.535 f66.289 3.897 f7 −3.370 −3.444 f3/f4 −0.719 −0.596 (R1 + R2)/(R1 − R2)−1.868 −2.091 (R3 + R4)/(R3 − R4) 10.038 7.674 (R5 + R6)/(R5 − R6) 0.3350.217 (R7 + R8)/(R7 − R8) −0.340 −0.451 (R9 + R10)/(R9 − R10) −2706.815−0.780 (R11 + R12)/(R11 − R12) −4.855 −1.621 (R13 + R14)/(R13 − R14)3.050 3.050 f1/f 1.523 1.518 f2/f −6.348 −3.855 f3/f 0.966 0.717 f4/f−1.345 −1.204 f5/f 53.461 −1.784 f6/f 1.762 1.064 f7/f −0.944 −0.940 d10.351 0.330 d3 0.258 0.235 d5 0.658 0.602 d7 0.230 0.230 d9 0.398 0.413d11 0.320 0.343 d13 0.250 0.253 Fno 1.805 1.804 TTL 4.390 4.390 d1/TTL0.080 0.075 n1 1.5440 1.5440 n2 1.5440 1.5440 n3 1.5440 1.5440 n4 1.64001.6400 n5 1.6400 1.6400 n6 1.7330 1.8470 n7 1.7330 1.7330

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens;wherein the camera optical lens further satisfies the followingconditions:1.51

f1/f

2.5;1.7

n6

2.2;−2

f3/f4

2;3

(R13+R14)/(R13−R14)

10;1.7

n7

2.2;where f: the focal length of the camera optical lens; f3: the focallength of the first lens; f3: the focal length of the third lens; f4:the focal length of the fourth lens; n6: the refractive power of thesixth lens; n7: the refractive power of the seventh lens; R13: thecurvature radius of object side surface of the seventh lens; R14: thecurvature radius of image side surface of the seventh lens.
 2. Thecamera optical lens as described in claim 1, wherein the first lens ismade of plastic material, the second lens is made of plastic material,the third lens is made of plastic material, the fourth lens is made ofplastic material, the fifth lens is made of plastic material, the sixthlens is made of glass material, the seventh lens is made of glassmaterial.
 3. The camera optical lens as described in claim 1, wherein hefirst lens has a positive refractive power with a convex object sidesurface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:−4.18

(R1+R2)/(R1−R2)

−1.25;0.16

d1

0.53;where R1: the curvature radius of the object side surface of thefirst lens; R2: the curvature radius of the image side surface of thefirst lens; d1: the thickness on-axis of the first lens.
 4. The cameraoptical lens as described in claim 1, wherein the second lens has anegative refractive power with a convex object side surface and aconcave image side surface; the camera optical lens further satisfiesthe following conditions:−12.70

f2/f

−2.57;3.84

(R3+R4)/(R3−R4)

15.06;0.12

d3

0.39;where f: the focal length of the camera optical lens; f2: the focallength of the second lens; R3: the curvature radius of the object sidesurface of the second lens; R4: the curvature radius of the image sidesurface of the second lens; d3: the thickness on-axis of the secondlens.
 5. The camera optical lens as described in claim 1, wherein thethird lens has a positive refractive power with convex object sidesurface and a convex image side surface; the camera optical lens furthersatisfies the following conditions:0.36

f3/f

1.45;0.11

(R5+R6)/(R5−R6)

0.50;0.30

d5

0.99;where f: the focal length of the camera optical lens; f3: the focallength of the third lens; R5: the curvature radius of the object sidesurface of the third lens; R6: the curvature radius of the image sidesurface of the third lens; d5: the thickness on-axis of the third lens.6. The camera optical lens as described in claim 1, wherein the fourthlens has a negative refractive power with a concave object side surfaceand a concave image side surface; the camera optical lens furthersatisfies the following conditions:−2.69

f4/f

−0.80;−0.90

(R7+R8)/(R7−R8)

−0.23;0.12

d7

0.35;where f: the focal length of the camera optical lens; f4: the focallength of the fourth lens; R7: the curvature radius of the object sidesurface of the fourth lens; R8: the curvature radius of the image sidesurface of the fourth lens; d7: the thickness on-axis of the fourthlens.
 7. The camera optical lens as described in claim 1, wherein thefifth lens has a concave object side surface; the camera optical lensfurther satisfies the following conditions:3.57

f5/f

106.09;−5413.63

(R9+R10)/(R9−R10)

−0.52;0.52

d9

0.62;where f: the focal length of the camera optical lens; f5: the focallength of the fifth lens; R9: the curvature radius of the object sidesurface of the fifth lens; R10: the curvature radius of the image sidesurface of the fifth lens; d9: the thickness on-axis of the fifth lens.8. The camera optical lens as described in claim 1, wherein the sixthlens has a positive refractive power with a convex object side surfaceand a concave image side surface; the camera optical lens furthersatisfies the following conditions:0.53

f6/f

2.64;−9.71

(R11+R12)/(R11−R12)

−1.08;0.16

d11

0.51;where f: the focal length of the camera optical lens; f6: the focallength of the sixth lens; R11: the curvature radius of the object sidesurface of the sixth lens; R12: the curvature radius of the image sidesurface of the sixth lens; d11: the thickness on-axis of the sixth lens.9. The camera optical lens as described in claim 1, wherein the seventhlens has a negative refractive power with a convex object side surfaceand a concave image side surface; the camera optical lens furthersatisfies the following conditions:−1.89

f7/f

−0.63;0.13

d13

0.38; where f: the focal length of the camera optical lens; f7: thefocal length of the seventh lens; d13: the thickness on-axis of theseventh lens.
 10. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 4.83 mm.
 11. The camera optical lens as described inclaim 1, wherein the aperture F number of the camera optical lens isless than or equal to 1.86.